Did you know the first jack-o'-lanterns were made of turnips, rutabagas, gourds, beets or even hollowed-out potatoes? The pumpkin didn't become prominent until the 1800s, but because of its generous size and easily carved flesh, the large orange squash has remained the basis for today's jack-o'-lanterns. The practice originated with Irish immigrants, who, one Hallow's Eve, used carved vegetables as lanterns to ward off evil spirits. The tradition lives on today, contributing to the spookiness of Halloween's dramatic decor. Now, carving pumpkins has become more of an art form, prompting formal and friendly competition alike. Here, Howcast experts outline the basics to help you get started.